As many as three dogs may have ingested toxic chemicals at a neighborhood park in Gunbarrel, where authorities have recovered six meatballs laced with rat poison since Monday evening.

The Boulder County Sheriff's Office was notified Monday around 6 p.m., after dog owner Uli Bromme called to report that her puppy had eaten something suspicious at the park, 5150 Buckingham Road in Gunbarrel.

Animal control specialist Sara Spensieri said Tuesday that the Sheriff's Office has no leads yet.

Two of the meatballs were sent to a laboratory at Colorado State University for chemical testing, and another will be tested for human DNA on Wednesday at the Colorado Bureau of Investigation. Results of the DNA testing may take up to a week to process.

"Everyone in this neighborhood is shocked," said Bromme, whose six-month-old golden retriever, Amos, ate one of the meatballs around 4:30 p.m. Monday. "We all know each other; the dogs know each other. That's where we go to socialize, and for our dogs to socialize."

Amos ate one meatball, but Bromme was able to snatch up another before the dog got to it. It looked like hamburger meat laced with bluish-green pellets, Bromme said. She rushed Amos to the veterinarian, where he was given an injection that caused him to vomit, after which doctors confirmed the substance was indeed rat poison.

The dog's condition is stable, and Spensieri said two other dogs are also recovering after possibly consuming the meatballs.

All three dogs will continue to be monitored because symptoms of rat poisoning may take two to three days to show, according to Matt Booth of Alpenglow Veterinarian Clinic in Boulder. Booth added that symptoms pet owners should watch for include lethargy, decreased appetite, pale gums, difficulty breathing and unexplained bleeding or bruising.

Officials urged owners to take their pets to a veterinarian if there is any chance that they may have consumed the poison because it may be too late by the time the symptoms start showing.

One of the poisoned meatballs found at a Gunbarrel park Monday night. (Boulder County Sheriff's Office)

Anyone with information on the poisoning attempts is asked to call the Boulder County Sheriff's Office at 303-441-4444.

Brandon Weil helps his dog Amos out of his car Tuesday outside the Indian Peaks Veterinary Hospital in Boulder after the dog ate a poisoned meatball at Buckingham Park in Gunbarrel. (Jeremy Papasso / Daily Camera)

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